Shih M Ho

Title: Shih M Ho: Innovator in Voltage Limiting Devices

Introduction

Shih M Ho is a notable inventor based in Pittsburgh, PA (US). He has made significant contributions to the field of electrical engineering, particularly in the development of voltage limiting devices. With a total of 3 patents to his name, his work showcases innovative methods and materials that enhance the performance and reliability of electrical components.

Latest Patents

One of his latest patents is a method of fabricating a non-linear voltage limiting device. This device is designed to eliminate flashover failure across its circumferential edge, displaying a particular stability characteristic. The voltage limiting device features a rising resistive current with time at predetermined temperature and voltage levels. It includes a disc-shaped wafer primarily composed of zinc oxide. The fabrication method involves forming and sintering the wafer according to specific temperature and time requirements, followed by applying an anti-flashover coating that requires curing. The coated wafer is then annealed to cure the coating while minimizing the resistive current rise characteristic.

Another significant patent is for forming zinc oxide-containing ceramics by hot pressing. In this process, zinc oxide powder is mixed with a single-phase mixed oxide glass powder, including bismuth oxide. The mixture is simultaneously heated and pressed to create a consolidated ceramic body with linear electrical characteristics. Subsequent annealing transforms this body into one with non-linear characteristics.

Career Highlights

Shih M Ho has worked with prominent organizations such as the Electric Power Research Institute and Westinghouse Electric Corporation. His experience in these companies has allowed him to apply his innovative ideas in practical settings, contributing to advancements in electrical engineering.

Collaborations

Throughout his career, Shih M Ho has collaborated with notable colleagues, including Tapan K Gupta and Douglas M Mattox. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Shih M Ho's contributions to the field of electrical engineering, particularly through his patents and collaborations, highlight his role as an innovator. His work continues to influence the design and functionality of voltage limiting devices, showcasing the importance of innovation in technology.